CN213272592U

CN213272592U - Carborundum guide plate of combustor

Info

Publication number: CN213272592U
Application number: CN202022285948.XU
Authority: CN
Inventors: 马吉展; 苏高宏; 程振; 王振海
Original assignee: Henan Hongji New Material Co Ltd
Current assignee: Henan Hongji New Material Co Ltd
Priority date: 2020-10-14
Filing date: 2020-10-14
Publication date: 2021-05-25
Anticipated expiration: 2030-10-14

Abstract

The utility model relates to a silicon carbide guide plate of a combustor, wherein a plurality of detachable guide pieces which are sequentially clamped are arranged in a shell; one end of the shell is provided with a detachable nozzle; a flow distribution piece is clamped at one end of the flow guide piece close to the nozzle; the flow guide piece comprises a sleeve and a flow guide; and a plurality of clamping blocks arranged at intervals are arranged on the inner wall of the sleeve. The utility model has the advantages of reasonable design, through the water conservancy diversion spare that sets up a plurality of joints and connect in the combustor casing to the setting avoids the buggy to strike the fixture block that corrodes, the effectual production efficiency and the dismouting efficiency that improve equipment have reduced the manufacturing cost of equipment, remove the method of changing the water conservancy diversion spare through using after the deadline, the effectual cost of maintenance that has reduced has improved maintenance efficiency.

Description

Carborundum guide plate of combustor

Technical Field

The utility model belongs to the technical field of the industrial boiler technique and specifically relates to a carborundum guide plate of combustor.

Background

The development of the power industry places ever higher demands on pulverized coal combustion technology. The burner is the main combustion equipment of the pulverized coal steam boiler and has the function of ensuring that fuel and combustion air can be fully mixed, ignited in time and stably combusted when entering a hearth. Because the generator set participates in peak shaving, the pulverized coal combustion equipment is required to have deep stable combustion capability. Chinese patent document No. CN2253800Y discloses a pulverized coal burner, in a primary air duct before a pre-combustion section, a system consisting of a stop, a guide plate and a blunt body arranged in sequence according to the direction of the primary air duct is used as a pulverized coal concentrator and a device for enhancing hot flue gas backflow; the device sends the thick coal powder airflow to a high-temperature backflow area at the center, and sends the light coal powder airflow to the vicinity of the wall surface, thereby ensuring ignition and preventing the burner from being burnt out. The injection and suction effect of the secondary air arranged outside can increase the reflux area and reduce the resistance of the primary air. The burner has simple structure and easy arrangement, can be made into a direct current or rotational flow burner, can strengthen the burning of medium powder and save the fuel oil. But the deflector of current adopts combustor integrated into one piece to set up mostly, and the deflection angle is fixed, and the deflector receives the long-time impact of buggy in the use, takes place wearing and tearing easily, and current deflector maintenance is complicated, and cost of maintenance is too high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a carborundum guide plate of combustor for solve the problem that current combustor guide plate maintenance is complicated, cost of maintenance is too high.

In order to solve the problems, the utility model provides a silicon carbide guide plate of a combustor, wherein a plurality of detachable guide pieces which are clamped in sequence are arranged in a shell; one end of the shell is provided with a detachable nozzle; a flow distribution piece is clamped at one end of the flow guide piece close to the nozzle; the flow guide piece comprises a sleeve and a flow guide; and a plurality of clamping blocks arranged at intervals are arranged on the inner wall of the sleeve.

The utility model provides a carborundum guide plate of combustor still has following technical characteristic:

furthermore, one end of the sleeve is provided with a clamping groove; and the other end of the sleeve is provided with an inserting block matched with the adjacent clamping groove.

Further, the flow guider is a flow guide plate which is obliquely arranged along the direction close to the nozzle to the direction close to the central axis of the sleeve.

Furthermore, the flow guider is two flow guide plates which are obliquely arranged along the direction close to the nozzle to the direction close to the central axis of the sleeve.

Further, the distance between the two guide plates on each sleeve pipe is gradually reduced along the direction close to the nozzle.

Further, the two deflectors are arranged symmetrically with respect to the deflector axis.

Further, the inclination angle formed by the guide plate and the central axis of the sleeve is 10-30 degrees.

Further, the fixture block is arranged on the side wall, which is not contacted with the fluid director, in the sleeve.

Furthermore, the clamping block is a T-shaped hook with a web plate fixed on the side wall of the sleeve.

Further, the flow guide piece is made of recrystallized silicon carbide.

The utility model discloses following beneficial effect has: the utility model has the advantages of reasonable design, simple structure, through the water conservancy diversion spare that sets up a plurality of joints and connect in the combustor casing to the setting avoids the buggy to strike the fixture block that corrodes, the effectual production efficiency and the dismouting efficiency that improve equipment have reduced the manufacturing cost of equipment, remove the method of changing the water conservancy diversion spare after using the deadline, the effectual cost of maintenance that has reduced has improved maintenance efficiency.

Drawings

FIG. 1 is a schematic cross-sectional view of the structure of an embodiment of the present invention;

fig. 2 is a cross-sectional view of an embodiment of the present invention;

fig. 3 is a schematic structural view of a flow guide member according to an embodiment of the present invention;

in the figure: 1-shell, 2-diversion element, 21-sleeve, 22-diversion element, 23-clamping block, 24-clamping groove, 25-insertion block, 26-diversion plate, 3-nozzle and 4-diversion element.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In an embodiment of the silicon carbide flow guide plate of the burner of the present invention as shown in fig. 1 to 3, a plurality of detachable flow guide members 2 are disposed in a casing 1 and are sequentially clamped; one end of the shell 1 is provided with a detachable nozzle 3; one end of the flow guide part 2 close to the nozzle 3 is clamped with a flow distribution part 4; the flow guide part 2 comprises a sleeve 21 and a flow guide 22; a plurality of blocks 23 are arranged on the inner wall of the sleeve 21 at intervals. The combustor shell is internally provided with the plurality of clamping connection diversion parts, and the diversion part set with the mass production object and the appropriate deflection angle is selected according to different pulverized coal combustion requirements, so that a diversion channel with the requirement is formed, the production efficiency of the equipment is effectively improved, the production cost of the equipment is reduced, and after the combustor is actually used for a certain time, the diversion parts are gradually removed and replaced through disassembling the nozzles, and the maintenance cost is effectively reduced.

Specifically, one end of the sleeve 21 is provided with a clamping groove 24; the other end of the sleeve 21 is provided with an inserting block 25 matched with the adjacent clamping groove 24. Through the draw-in groove and the inserted block that the cooperation of sleeve pipe both ends set up, form complete joint part, the effectual leakproofness of having guaranteed that two adjacent water conservancy diversion spare are connected.

Specifically, the deflector 22 is a deflector 26 inclined toward the central axis of the sleeve 21 in a direction toward the nozzle 3.

Specifically, the deflector 22 is two deflectors 26 disposed to be inclined in a direction approaching the central axis of the sleeve 21 in a direction approaching the nozzle 3.

Specifically, the distance between the two baffles 26 on each sleeve 21 decreases stepwise in the direction toward the nozzle 3. Through the design of the stepped flow guide plates arranged in a stepped mode in sequence, the pulverized coal is quickly concentrated, the pulverized coal gathering efficiency is effectively improved, and the combustion efficiency of the combustor is guaranteed.

In particular, the two deflectors 26 are arranged axially symmetrically with respect to the deflector 2.

Specifically, the inclination angle formed by the guide plate 26 and the central axis of the sleeve 21 is 10-30 °. Through setting for the inclination of guide plate, when guaranteeing that the guide plate carries out the buggy water conservancy diversion, avoided the buggy to directly erode the guide plate, reduced the loss of guide plate.

Specifically, the latch 23 is provided on a sidewall of the sleeve 21 that does not contact the deflector 22. The fixture block is arranged on the side wall which is not contacted with the fluid director, so that the direct impact of the pulverized coal is effectively avoided, the erosion to the fixture block in the use process is reduced, and the long-time retention of the fixture block is ensured.

Specifically, the latch 23 is a T-shaped hook with a web fixed to the sidewall of the sleeve. Through designing the fixture block for the cause of T type hook, tensile fixed convenience when having improved the dismantlement water conservancy diversion spare, dismantle the nozzle after, establish the stay cord of fixing on T type hook through the cover, quick convenient realization water conservancy diversion spare shifts out, realizes the quick replacement of water conservancy diversion spare, reduces cost of maintenance.

Specifically, the baffle 2 is a recrystallized silicon carbide material. The guide member is made of recrystallized silicon carbide, so that the corrosion resistance of the guide member is further improved, and the service life of the guide member is prolonged.

The working principle is as follows: after the large-scale equal-size shell 1 is produced, the diversion pieces 2 with proper intervals and deflection angles are selected to form a pulverized coal concentration channel according to the diversion requirements of actual requirements, the plurality of diversion pieces 2 are sequentially clamped and just filled in the inner cavity of the shell 1, the nozzle 3 at the installation end just supports and blocks the inner cavity of the shell 1, the stable assembly of the diversion pieces 2 is ensured, pulverized coal enters the shell 1, and the diversion and aggregation concentration of the diversion plate 26 effectively improve the combustion efficiency of the pulverized coal; after using a certain time, demolish nozzle 3, overlap the noose in proper order and establish on the fixture block 23 in every sleeve pipe 21, shift out casing 1 with water conservancy diversion spare 2 one by one, replace back to water conservancy diversion spare 2, the joint pushes once more in casing 1 in proper order and assembles to installation nozzle 3 fixes the shutoff to water conservancy diversion subassembly, the quick maintenance efficiency that has improved equipment has reduced cost of maintenance.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A silicon carbide baffle of a combustor, characterized in that: a plurality of detachable flow guide pieces (2) which are clamped in sequence are arranged in the shell (1); one end of the shell (1) is provided with a detachable nozzle (3); a flow distribution piece (4) is clamped at one end of the flow guide piece (2) close to the nozzle (3); the flow guide part (2) comprises a sleeve (21) and a flow guide (22); and a plurality of clamping blocks (23) arranged at intervals are arranged on the inner wall of the sleeve (21).

2. The silicon carbide fluidic plate of a burner of claim 1, wherein: one end of the sleeve (21) is provided with a clamping groove (24); and the other end of the sleeve (21) is provided with an inserting block (25) matched with the adjacent clamping groove (24).

3. The silicon carbide fluidic plate of a burner of claim 1, wherein: the flow guide (22) is a flow guide plate (26) which is obliquely arranged along the direction close to the nozzle (3) to the direction close to the central axis of the sleeve (21).

4. The silicon carbide fluidic plate of a burner of claim 1, wherein: the flow guider (22) is two flow guide plates (26) which are obliquely arranged along the direction close to the nozzle (3) to the direction close to the central axis of the sleeve (21).

5. The silicon carbide fluidic plate of a burner of claim 4, wherein: the distance between the two guide plates (26) on each sleeve (21) is gradually reduced along the direction close to the nozzle (3).

6. The silicon carbide fluidic plate of a burner of claim 5, wherein: the two guide plates (26) are arranged symmetrically with respect to the axis of the guide piece (2).

7. The silicon carbide fluidic plate of the burner of claim 3 or 4, wherein: the inclination angle formed by the guide plate (26) and the central axis of the sleeve (21) is 10-30 degrees.

8. The silicon carbide fluidic plate of a burner of claim 1, wherein: the clamping block (23) is arranged on the side wall of the sleeve (21) which is not contacted with the fluid director (22).

9. The silicon carbide fluidic plate of a burner of claim 1, wherein: the fixture block (23) is a T-shaped hook with a web plate fixed on the side wall of the sleeve.

10. The silicon carbide fluidic plate of a burner of claim 1, wherein: the flow guide piece (2) is made of recrystallized silicon carbide.